Railway draw-head and coupling.



W. T. 6/. H. E. VAN DORN.

RAILWAY DRAW HEAD'AND COUPUNG.

APPLICATION FILED JULY24, 19H- 1,148,556. Patented Aug. 3, 1915.

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W. T. & H. E. VAN BORN.

RAILWAY DRAW HEAD AND COUPLiNG.

APPHCATION FILED .iULY 24. 191:.

1,148,556. rammed Aug, 3, 1915.

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W. T. & H. E. VAN DORN.

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RAILWAY DRAW HEAD AND COUPLING. APPLICAHON FILED JULY 24. 191.1.

Patented Aug. 3, 1915.

w. T. & H. E VAN DO RN. RA| LWAY DRAW HEAD AND COUPLING.

APPLICATION FILED JULY24, 19H.

Patented Aug,

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RAiLWAY DRAW HEAD AND COUPLING.

APPLICATiON FILED JULY 24. 1911. 1,148,556? ?atented!1ug. 3,1Q15

7 SHEETS-SHEET 6.

T. & H. E. VAN DORN.

RAILWAY DRAW HEAD AND COUPLING.

APPLICATION FILED JULY 24, I911;

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WILLIAM 1. "JAN BORN AND HERBERT E. VAN BORN, OF CHICAGO, ILLINOIS.-

RAILWAY DRAW-HEAD AND COUPLING.

Specification of Letters Patent. Patented Aug. 3, 1915.

Application filed July 24, 1911. Serial a... 640,235.

To all whom it may concern:

Be it known that we, WILLIAM T. VAN Donn and HERBERT E. VAN Donn, citizens of the United States, and residents of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Railway Draw- Heads and Couplers: and .we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and .to the numbers of reference marked thereon,

which form a part of this specification.

Heretotore couplers of the M. C. B. or Janney type have been made standard for steam roads and have gone into general use. The construction of these couplers, however, is such that, apparently unavoidably, a large amount of slack is left between the orawheads permitting an independent longitudinal movement of one drawhead relatively to the other, and permitting also in some instances. the buckling of the drawheads one upon the other at their point of engagement. Both of these movements occasion breakage of the knuckle and consequent breaking in two of the train, fre quentlv occasioning disastrous wrecks and much less.

It has been impossible heretofore to afford any suitable connection with an M. C. B.

V coupler whereby the steam and air lines of the trains could be coupled simultaneously with the coupling of the drawheads. Although various attempts have been made along this line. the resulting structures were so clumsy and unreliable as to render them practically valueless and usually the construction is such as to render the coupling of the air and steam lines of the train entirely insutlicient to prevent leakage on curves. While these are the conditions on steam roads. substantially similar conditions have existed on interurban. ele'ated and subway roads and particularly so. inasmuch as the curves are frequently of shortradius, practically precluding the successful use of the Janney type of couplerz The object of this invention is to afford a drawhead and coupler so constructed as to afford an absolutely rigid connection between the drawheads, rendering movement of either drawhead impossible relatively the other either longitudinally or laterally thereofin other words, to so connect the drawheads as to form substantially a rigid bar from end to end, and to so connect the drawheads on the under frame of the car or a suitable draft .rigging, as to permit satisfactory adaptation on curves by the swinging of the draft gears asa whole.

It is also an object of the invention to afford a construction whereby one or more lines of air or steam hose are.so connected with the drawheads as'to enable the air and steam lines to be coupled simultaneously with the drawheads, insuring a tight joint for each, and without requiring appreciably greater spacethan when the steam and air lines are not used;

It is also an object of the invention to afford a construction in which a plurality of steam and air lines may be connected in the interlocking mecha ism or mutually engaging mechanism of urawheads when. coupled in such positions {ISIO insure the exact registering and coupling of. the hose simultaneously with the coupling of the drawhead and without possibility of injuring the hose connections.

The invention consists in the matters hereinafter describe I and more fully pointed out and defined in the appended claims.

In the drawings: Figure '1 is a top plan view of two coupled draft gears provided with drawheads embodying our invention, and showing the cars (for example, interurban or elevated cars) in dotted lines. Fig. 2 is a side elevation of the same, showing the car platforms in longitudinal section. Fig. 3 is an enlarged front end elevation of one of the drawhcads. Fig. 4- is a side elevation 'tlna-eot. Fig. 5 is a section on line 55 of Fig. 3. Fig. 6 is a top plan View of two,

drawhcads. showing the same coupled. Fi 7 is an enlarged-horizontal section on line 7-7 of Fig. 3. Fig. 8 is an enlarged view in elevation of the lock for one of the coupling links. Fig. 9 is a bottom plan View thereof. Fig 10 is a section on line 1010 of Fig. 7. Fig. 11 is a section on line 1111 of Fig. 7 Fig. 12 is an enlarged side elevation of the shaft and bolt for-retracting or actuating the locking bolt. Fig. 13 is an enlarged sectional detail of the releasing lever. Figs. and 15 are top plmvieya -.of, said lilik inclines inwardly and forstall tion of our invention for steam roads. Fig. .16 is an enlarged view in side elevation pf one of the drawheads and connectiOIlSJ illustrated in Figs. 14 and 15. Fig. 17

is a top plan view thereof.

AS1ShOWI1 in the drawings: The drawheads' 1, are faced flat on their meeting faces to afl? rd a tight joint, as shown in'Figs. 5

and 7;, and each is cored toafi'ordupper and 1 wer flat walls, and a flat wall 2, in the ciirriesponding side of each. Rigidly securedin said drawheadis a coupling link 3. This; as shown, is engaged in place by means 0 a pin 4', which extends through the drawhead and inner end of said link and is prbvided on one end with ahead and on the other preferably with a cotter pin to engage the' same in place. Each of said links is provided on the upper and the lower side thereof with a lug or relatively broad I rib 5, which seats in an aperture or recess therefor in the bottom and top walls of saiddrawhead and acts to hold said link from any, movement whatsoever relatively the drawhead in which it is secured. Each of said links is provided on its outer side with an outwardly directed shoulder 6, which I wardly and downwardly from its lower and bears against a part of the flat front face of the drawhead and from the extremity thereall ofwhich are arranged substantially obliquely the axis of the drawhead.

As shown, an inner and an outer inclined face 8, and 9, are provided thereon, said inclined faces being complemental, so that Y the link in one drawhead, may coincide and interfit with, and lie substantially parallel with the corresponding face of the other when the drawbars are in coupled relation.

. Said inclined face 9, affords nearly a right angle with the outer inclined face 7, to-

ether therewith affording the point of the ink and .each of said links is'beveled upupper faces respectively to bring said link to substantially a sharp point to facilitate the entry of the end of each link into the drawhead withthe compllemental link.

Parallel inwardly ad rearwardly inclined faces 10 and 11, a.e providedon each link, between and connecting which is an inclined face 12, arranged slightly obliquely with the outer engaging faces'of the draw head, asshown in Figs. 5 and 7 Within each drawhead is an inwardly inclined wall 13, the angle of inclination thereof being and Aside elevations respectively of an inin the sameplane therewith.

clination of the face 7, on the link. A

Seated in eachdrawhead is a locking bolt 14 having an inner inclined face it, corresponding with the inclined face or wall 13, within the drawhead and adapted when the locking bolt ispressed inwardly, to lie provided with recesses 15, in the inner end thereof, in which are engaged pushing springs 16, which act normally to hold said locking bolt forwardly to the position shown in Fig. 7.

Extending vertically through. the side wall of the drawhead at the outer side of said locking bolt 14., is a shaft 17, having an arm o lever 18, secured thereon, which extends into the recess 15, at the outer side of the locking bolt to permil the same to actuate said bolt. Said shaft 17,is provided on itsupper end with a laterally directed crank arm 18*, and pivotally engaged thereon is a lever 19, which is longitudinally slotted to receive the head or upper end of Said bolt is the pin 4, therethrough, whereby the link in the same drawhead is engaged in place. A flange 20, integral with the rear end of said lever, is provided around the end thereof and on each side of the same at a point in advance of said pin and at its extremities are rounded to afford a cam'surface 21, V I l ,at each side of said lever.

gaged on thepin 4, as shown in Fig. 6, is a releasing lever 22,.provided with a handle for manual engagement, and, as shown, having laterally directed arms 23, one-on each side thereof to engage the cam' faces 21, on the flange 20, so that movement of the actuating lever 22, in either direction, serves tofretract the lever 19, and thereby the shaft 17, and retract the locklng bolt against the tension of the springs to the position shown in Fig, 5.' As shown, a shoulder 24, is provided .on said locking bolt in said recess, against which the end of the lever 18, engages to hold said bolt retracted' when uncoupled, or preparatory to coupling, if desired. A rounded cam 25, is provided on said shaft 17, which may be in-- tegral with the lever orarm 18, if desired, 1

and which projects inwardly into position to be engaged and actuated by the link when the bolt is held retracted by the arm 18, thereby permitting said bolt to slide forwardly when the links are in coupled engagexnent. as shown in Fig. 7.

As shown in Figs. 4: to 7 inclusive, said drawheads are pivotally engaged upon the draft iron '26, by means of a transverse boltv Pivotally enrotate 27, which extends through the tail-of the f drawhead and through the draft iron" or bar, which is mserted, as shown m Fig. 2, thereinto, and a s ring comprising one or more leaves 28 an 29, as shown in Fig. 4,

is engaged on the draft iron 26, and extends beneath and supports the drawhead in operative position for coupling.

As shown, a clip or casing 30, is bolted on the draw bar and receives the rear end of said leaf spring, and is provided with a downwardly curved, under wall adapted to limit the flexing of said springs when J stressed by the weight of the drawhead or otherwise.

Inasmuch as the link in each d rawhead is rigidly held from movement in its drawhead, no difficulty is experienced in connectingthe air and steam couplings through the 7 5 drawheads and links to automatically couple the air and steam lines simultaneously with the coupling of the drawheads. For this purpose, each drawhead and the link therefin,.is bored obliquely, as shown in Figs. 5

and 7, to afford the desired number of connections for the steam and air lines.

TSlidably fitted in the bore in each draw- I which a rubber or other suitable headand link, is a pipe 32, which is threaded at its outer end 33', for connection in any suitable, manner with the proper leads of hose or pipe,

against astop afforded by a nut 36,threaded into the wall of the drawhead and'through which-said pipe 32, slides. lflachcf said pipes 32,. at the'inner end, is provided with packing 37, en-

gaged on the ends thereof, and extending thereinto and acting when thegdrawheads arebrought into coupled relation, as shown in Fig. 7, to register and to afford an air and steam tight connection between. the ends of said pipes or tubes 32. The bo'reof the pipe is increased within the integral collar 34:, to afford a valve chamber and slidably engaged at the axis of each of said pipes 32, is a valve rod 38, having a puppet valve closure 39, thereon. The valve rod '38, is held axially in each pipe and extends through suitable apertures provided in guide webs 41, which extend diametrically across each of said pipes near each end thereof, and, as shown, a pushing spring each of the valve rods an sure. Said valve rodsare of sufficient length, as shown in F 1g. '5," to extend beyond the packing on each of said pipes and the disposition of the valve rods is such; that when the ing therethrough horizontally,

42,- is provided on bears against the outer guide web {for the valve'rod at one end, and at the other against the valve clothrough the lugs 58, jsecurechoneach "offtlie drawbar."' As I "ea-chef saidrodsnrid 'all' 'times is held drawheads are coupled, as shown in 7 the valves in the. air and steam lines are of necessity opened automatically, while the uncoupling (or breaking in two at the drawheads, ifnsuoh a thing were possible) would result in the instant closing of said pipes by releasing the valves.

In the construction illustrated in Figs. 1 to 7 inclusive, the construction is shown as embodied for interurban or elevated and subway use, and for useon the larger street railway cars. When so used, conveniently the drawhead is carried upon any suitable radius bar i4, swingingly secured to the under frame of the car and supported upon a segment shaped carrying iron 45, to permit said draft gears to swing as required beneath the cars in passing around curves or otherwise without necessitating any lateral bending between the points of pivotal connection on the respective cars, A draft and buffing gear 46, of any kind may afford the connection between the draft iron .and radius bar or the draft and lvuling gearmay be provided at the inner end of the radius bar or any suitable construction for this purpose may, of course, be used.

The construction illustrated inFigs'. 1a to 17 inclusive illustrate an embodiment of our invention for steam roads and for certain interurban roads. For this purpose,as shown,

a draft gear d6, of any suitable kind secured on the under frame of the car and the draft iron or irons 47, are pivotally engaged thereon by means of a pin as, extendas shown more clearly in Figs. ll and 15'. Said draft iron comprises, as shown, forwardly directed parallel arms &9, rigidly secured on the draft iron 47, and are pivotal-1y secured to the tail of the drawhead by means of a pin 50, which extends through said arms 49, and the tail of the drawhead, as. shown in Fig. 15. A bracket 51,is provided on each side of said draft arms .49, and secured on the draft arm and extending through said brackets is a bar 52, which rests at its ends 'on' springs 54%, secured in each of""said' brackets and'upon which bears at each end thereof a spring'55, also engaged 'insaid bracket, thus permitting the coupler or drawhead to move upwardly or downwardly as desirable, when th'e'car is'in motioriand also permitting saiddraft headsto adapt themselves into alinement when coupled, even should theheight'o f the car platforms vary somewhat. A laterally directed lug 56, is providedv on'eacli side of the"drawhead near its tail' and pivotally engaged with each is a rod 57, which 'extendsinvvardly V s de mggQQ, 15 secured on under compression by means of suitable nuts 60, secured on the ends ofsaid rods 59. In.

this construction, three train pipes or lines A, B and C, are shown connected throu h the drawhead. In this construction a so, the lever 62, for retracting the locking bolt, is provided on the under side of the drawhead instead of on the-top thereof, and is the springs need to be merely of 'sufiicient 'cesstherefor in the other.

other drawhead is swung to re ease position,

secured on the lower end'of'the pin 17. As

shown, said lever 62, is longitudinally slotted at its end engaging said pin to receive a coiled spring. ..63, which is wound on said pin therein. One end of said spring 'e'n gages-said lever in the slot, as shownin Fig.

13, and the other thereof extends upwardly around the end of said lever through a suitable aperture in the lever 64', secured on said pin 17, and bears against a suitable shoulder- 65, on the top of said lever and also at its eitremity against a shoulder or stop 66, integral with the drawhead at the the bolts inwardly and strike the inclined walls 13, in each drawhead, which directs.

the end of each link inwardlyinto close re,- lation with the heelof the other, as shown in Fig; 7. This position releases the bolts in each drawhead and the springs thereupon impel said bolts positively forward between the back of each link and the side wall of the drawhead affording a long-bearing therebetween; Said bolt in looking position is subjected to nothing but crushing stress, and

strength to impel the bolts forwardly as the links come into coupled relation. As the dra-wheads couple, as shown in Fig. 7 the valve stems in the train line pipes of one drawhead, come into contact with the valve stems in the complemental coupler and these stems are forced inwardly, opening the valves in the train lines. drawhead have'a greater or a less number of lines connected therewith, no inconvenience can occur, inasmuch as the valves in the train lines not coupled, remain closed. When it is desired to uncouple the drawheads, the actuating lever is swung in either direction, thus first retracting the bolt, and second, locking such bolt in its retracted posit1on by the engagement of the end of the lever 18, against the shoulder 24, provided therefor. When the actuatin lever for the The links press- Should it occur that a thebolts of both dra wheads having been re-' tracted, the drawheads readily separate.

It is, ofcoilrse, obvious that we have produced a fundamentallynovel device for the class specified, and, while we have shown the same adapted for interurban and steam road'traflic, it' is, of course, to be understood that, generally peaking, these adaptations are merely illustrative.

We do not purpose limiting the patent to be granted on this application to the specificembodiments and forms ofconstruction her'einbefore set forth illustrated and -de-' scribed as the preferred form of our inven'-' tion, and it is to be understood that we purpose claiming broadly any construction em bodying this invention in which the train line pipes 'may' be coupled simultaneously and automatically with the coupling of the drawheads. I

We claim as our invention:

1..In a device of the class described a drawhead, a pointed link rigidly secured.

in and projecting therefrom and having a straight back, inclined faces on the'inner side of said link adapted to interlock with the complemental-faces on a link coupled therewith, a bolt having an inclined face andslidable longitudinally in the drawhead acting to engage between the outer straight.

side of said complemental link and the wall of the drawhead, and'rigidly engaging both in coupled relation, said inclined face adapted to correspond to the inclination of the drawhead both in locking and in retracted position, and a lever for retracting said bolt in uncoupling.

2. A drawhead having an inner angled" surface, a pointed straight backed link rigldly secured in and projecting therefrom, inclined faces on the inner side of said link plemental faces on a link coupled therewith, a longitudinally slidable bolt seated in a complemental socket in the drawhe'ad and extending longitudinally thereof, the head" of said bolt angled to fit flush with the inner angled surface of the draw-head both in extended and retracted position, and a spring seated in said socket and bolt and acting to impel the bolt to engage between 'adapted'to interfit and interlock with comthe outer side of such vcomplemental link and the wall of the drawhead and acting to rigidly engage the links in coupled relat-lOIlj c 7 3. A drawhead, a pointed link removably but rigidly secured in and projecting there-- from, a plurality of oppositely inclinedl'faces on the inner side of said link adapted to interlock with comple ental faces on a link coupled therewith tq afford a plurality of mutually engaging pulling shoulders andj a plurality of mutuallyv enga g bufiin shoulders, 11. vbolt slidable longlt iidinally ii the drawhead adapted to be retainedin' unlocked position and when in locking positron acting to engage the outer side of such both in coupled relation,

, corresponding link of a drawhead to couple therewith, and affording two pulling faces and a pluralityof buffing faces, an inclinedwall in each drawhead acting to force said links into positive engagement incoupling, a spring pressed longitudinally slidable bolt in each drawhead acting to lock the links in engagement, manually operated means for retracting and retaining the bolts for uncoupling, in unlocked position, and a cam on said bolts adapted to be operated by the complemental links for releaslng the bolts from such position.

5. A drawhead, a link rigidly but removably engaged therein, oppositely inclined faces on the inneriside of said link adapted to interfit comp'icmental faces on the corresponding link of a drawhead to con le therewith, and affording two pulling an a plurality of bufiing faces, an inclined wa l in each drawhead acting to deflect said links into positive engagement in coupling, said drawhead having a longitudinal socket therein at the side of said wall, a spring pressed bolt in said socket having the head thereof inclined to correspond with said inclined wall when retracted and acting to engage between the side of the drawhead and said corresponding link to'lock the links in engagement, and manually operated means for retracting the bolts for i'ncou pling.

6. In a device or the class described a drawhead, a link rigidly but removably 'engaged therein, oppositely inclined faces on the inner side of said link adapted to interfit corresponding faces on the corresponding link to couple therewith, an inclined wall in each drawhead acting to force said link into positive engagement, a bolt in each drawhead engaged between the entering link and the side Wall of the drawhead and acting to lock the link in engagement, means retracting and retaining the bolts in unlocked position, and mechanism associated with said means and operated by the complemental links to move said means and release the bolts from unlocking position.

7. In a device of the class described a drawhead, a link rigidly held thereinandprojecting therefrom, a plurality of pulling faces and a plurality of bufling faces op positely inclined therefrom on its inner side and at its outer end, a bolt adapted to positively hold said link and a complemental link in coupled relation in said drawhead,

and automatically releasable means locking said bolt in unlocking retracted position.

b. In a drawhead, link rigidly held therein and projecting therefrom, inclined faces at its outer end affording a tapered point, a plurality of oppositely inclined faces on the inner side the link adapted to inter-fit corresponding faces of a similar link I a plurality of pulling and a and affording pluralityof buffing faces, a bolt adapted to positively and firmly hold said corresponding links in coupled relation in said drawhead, means for locking said bolt in retracted position, and a cam associated with said bolt and adapted to be contacted by said corresponding link torelease said bolt into unlocking position.

9. In a drawhead of the class described a removable -link projecting therefrom and adapted to rigidly engage and interlock with the link in a complemental drawhead, re leasable means held in unlocking position, and actuatable by the complemental link into locking position to lock the links in positive engagement, a tubular train line connection extending obliquely through said drawhead link at a buffing face, and adapted to be brought into positive engagement with a like connection in a like drawhead, by the coupling of the drawhead, a valve thereinv adapted to be openedautomatically when I the drawheads are coupled, and means to prevent leakage.

.10. In a drawhead of the class described a link projecting therefrom, adapted to rigidly engage and interlock with the correspending link in a complemental drawhead, a pin extending through the drawhead and the inner end of the' link, a laterally directed integral projecti' 1 on the link engaging the end of the drawlxead, a slidable bolt, releasing means actuatable by said corresponding link to projection of said bolts for rigidly holding said links in positive engagement when coupled, tubular train line connections extending obliquely through said drawhead, and throughsaid link'at a bufling face, and brought into positive engagement with a corresponding connection by the-coupling of the drawhead.

11. A combination railway coupling and pipe line joint of the class described embracing duplicate drawheads, a removable link rigidly engaged in each, and extending longitudinally therefrom, and inclined to a point at its outer end, inclined pulling faces,

' head acting to force said links into positive scribed embracing duplicate drawheads, a,

link rigidly engaged in each, and extending longitudinally thereof, a plurality of oppositely inclined faces on each link adapted to mutually interfit and engage with corresponding faces on the complemental link affording a plurality of pulling and a plu-' rality of buffing faces, an inclined wall ineach drawhead acting to force said links into positive engagement, a longitudinally slidable spring pressed bolt seated in-a socket in each drawhead acting to rigidly hold said links in coupled engagement, a pivoted crank for retracting and locking said bolts in retracted position and means thereon adapted to be actuated by the link to release the bolts to normal in uncoupling.

13. A railway coupling of the class described embracing duplicate drawheads, a pin in each drawhead, a link rigidly en.- gaged thereby and extending longitudinally thereof and tapered to a point at its outer end, inclined faces on said link adapted to mutually interfit and engage with corresponding faces on the complemental link and afiording a plurality of pulling faces and a' plurality ofbufling faces, a-substantially right angled projection in the back of each link engaging a shoulder on the drawhead, an inclined wall in each compartment acting to force said links into positiveengagement, a spring pressed bolt in each drawhead acting to rigidly engage said links in coupled engagement, means for retracting and holding the bolts retracted, and means actuated by the link in one draw head for releasing the bolt to normal in the other from such retracted position.

14. The combination with a drawhead and links affording an oblique bufling face, of a plurality of tubular train line connectionsopassing obliquely through said links normal to the bufiing face thereof and yieldably engaged therethrough, a sealing gasket mounted in the builing face of the links, an enlargement on the bufiing face of said links to prevent shearing of the gasket therefrom, said train line connections adapted to be brought into communication with corre-\ spon ing connections in a similar drawhead in coupling, and a valve in each of said train line connections adapted to be opened automatically in couplin I 15. In a device of the c ass described complementary drawheads, links secured there-' 5 in adapted to interlock with one another, bolts longitudinally slidable. in said drawheads adapted to retain said links in looking position, and means adapted to retain said bolts in retracted position and adapted to beactuated by said links to release said bolts. I

16. In a device of the class described a drawhead, an interlocking link therein, means longitudinally slidable in the drawlread adapted to retain a complemental link inserted therein in lockedposition, a pivoted member adapted to lock said means in unlocking position,and. a cam integral with said member projecting through an aperture in the drawhead and adapted to be actuated by said complemental link to release said means from unlocking position to lock said complemental link within the drawhead.

17. In a device of the class described interlocking links, spring actuated longitudinally slidable locking means adapted to retain the same in engagement, and a'pivotally mounted bell crank, onev arm thereof adapted to retain" said means in retracted 90 unlocking position, the other arm thereof adapted to be actuated by one of said links means from unlock:

to release said'locking ing retracted position. p

18. In a device of the elassde'scrib'edin terlocking links, a spring actuated slidable 1 bolt .21 dapted to lock thehsame in interlocking position, and a bell crank, one arm thereof adapted to retract and retainsaid bolt in unlocking position, manually operated means for actuating said bell crank,'the other arm of said bell crank adapted to be I contacted by one of said links to release said 1 bolts from retracted position. p a

19. In a coupler the combinationwiththe .105 interlocking links thereof, of'inclined: pipe f. lines extending therethrough and'terminat ing in the abutting facesthereof said ipe lines arranged-in said links along. the line of engagement thereof, adapting said.pipe..

lines to engage .one another coaxlally. Y

20. In a device of the class described a I drawhead adapted to be coupled by an oblique movement, an interlocking link therein, in clined abutting faces on said link, and hori-f zontal pipe lines extending therethrough normal to said inclined abutting faces and inclined within said drawhead and adapted to engage coaxially with other drawhead pipe lines in coupling. y r 21. Ina device of the class described a drawhead, inclined abutting faces thereon pipe lines extending horizontally through i said inclined abutting faces, and means constraining saiddrawheads to move to couple with a similar drawhead "on a line coaxial with the inclined pipe lines. i

22. In a device of the class drawhead, a link rigidly held therein, a bolt v subscribed our names inthe presence of two slidable in said drawhead adapted to hold at subscribing Witnesses.

similaicomplemental link in looking posi- T tion When engaged therein, and rotative 5 means retracting and acting to retain said i' bolt into unlocking position during the in- Witnesses: I terlocking of said complemented link. LAWRENCE REIB'sTEIN, In testimony whereof We have hereunto GEORGE R. MOORE. 

